Multiple Devices

Question

Reading the device class and driver documetation I supposed that each driver can be held in a separate Device Driver.

It's also possible to instantiate multiple DeviceClass Objects in the application. But in the main.c the YourDevice_Initialize(), YourDevice_ProcessData() and YourDevice_Deinitialize() methods are called only for one DeviceClass.

Answer 1

Hello,

of course, you can implement several device classes / device drivers - each of them responsible for controlling a dedicated hardware, driver, etc.

In principle, you can create several autoobjects out of one class - but typically (when talking about device classes) every device class accesses a certain hardware resource exclusively. Otherwise, this can cause some conflicts, when several instances are trying to communicate with the same (identical) hardware.

In many cases, a GUI application accesses several (independent) device classes.

To answer your question: In main.c you can also access these different device drivers to initialize/deinitialize the hardware and to process the data. "YourDevice_ProcessData()" is just a place holder. You can replace this by several calls to your drivers.

Comments

OK, and main.c will not be overwritten by F8 in EW Studio?

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Only the UI project is generated - for every Unit that your project contains one C file is generated.

Don't worry about your other files, like BSP, main.c, ..... Embedded Wizard Studio is responsible for the UI application - not more not less...